Full-text search of links from UI at any moment

We can have key shortcut to floating search text field where user can enter any text and get autocomplete (10 best results) using text representations of existing links.
If the user presses enter, the link with the request is created, and all links (or N best results) that match that request are connected to its link.
If user selected one of 10 best suggested result, he gets a single selected link, from where he can get the updated GraphQL to expand on it. When https://github.com/deepcase/deepcase/issues/59 is implemented, the user will be able to expand this link's surrounding.